2 * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
11 #include "chan_user.h"
13 #include "user_util.h"
14 #include "kern_util.h"
18 void (*announce)(char *dev_name, int dev);
22 char dev_name[sizeof("/dev/pts/0123456\0")];
25 void *pty_chan_init(char *str, int device, struct chan_opts *opts)
27 struct pty_chan *data;
29 data = um_kmalloc(sizeof(*data));
30 if(data == NULL) return(NULL);
31 *data = ((struct pty_chan) { .announce = opts->announce,
37 int pts_open(int input, int output, int primary, void *d, char **dev_out)
39 struct pty_chan *data = d;
45 printk("open_pts : Failed to open pts\n");
49 CATCH_EINTR(err = tcgetattr(fd, &data->tt));
59 sprintf(data->dev_name, "%s", dev);
60 *dev_out = data->dev_name;
61 if(data->announce) (*data->announce)(dev, data->dev);
65 int getmaster(char *line)
67 char *pty, *bank, *cp;
70 pty = &line[strlen("/dev/ptyp")];
71 for (bank = "pqrs"; *bank; bank++) {
72 line[strlen("/dev/pty")] = *bank;
74 if (os_stat_file(line, NULL) < 0)
76 for (cp = "0123456789abcdef"; *cp; cp++) {
78 master = os_open_file(line, of_rdwr(OPENFLAGS()), 0);
80 char *tp = &line[strlen("/dev/")];
82 /* verify slave side is usable */
84 err = os_access(line, OS_ACC_RW_OK);
86 if(err == 0) return(master);
87 (void) os_close_file(master);
94 int pty_open(int input, int output, int primary, void *d, char **dev_out)
96 struct pty_chan *data = d;
98 char dev[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
110 if(data->announce) (*data->announce)(dev, data->dev);
112 sprintf(data->dev_name, "%s", dev);
113 *dev_out = data->dev_name;
117 int pty_console_write(int fd, const char *buf, int n, void *d)
119 struct pty_chan *data = d;
121 return(generic_console_write(fd, buf, n, &data->tt));
124 struct chan_ops pty_ops = {
126 .init = pty_chan_init,
128 .close = generic_close,
129 .read = generic_read,
130 .write = generic_write,
131 .console_write = pty_console_write,
132 .window_size = generic_window_size,
133 .free = generic_free,
137 struct chan_ops pts_ops = {
139 .init = pty_chan_init,
141 .close = generic_close,
142 .read = generic_read,
143 .write = generic_write,
144 .console_write = pty_console_write,
145 .window_size = generic_window_size,
146 .free = generic_free,
151 * Overrides for Emacs so that we follow Linus's tabbing style.
152 * Emacs will notice this stuff at the end of the file and automatically
153 * adjust the settings for this buffer only. This must remain at the end
155 * ---------------------------------------------------------------------------
157 * c-file-style: "linux"